First of all, I never used any glActiveTexture api in my program. And this definitely issued by PerfStudio.
In my program I only use GL_ARB_bindless_texture extension to handle texture.
Error Message which caught by GL_ARB_debug_output is :
@glActiveTexture has generated an error (GL_INVALID_ENUM)
Thank you for the report. Can you provide a binary (or source code of the app) which reproduces the issue? Thanks.